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0a8b429059
This makes actual basic editing work. Including things like justify-paragraph etc, so lines get justified by number of UTF8 characters rather than bytes. There are probably tons of broken stuff left, but this actually seems to get the basics working right. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
48 lines
1.6 KiB
C
48 lines
1.6 KiB
C
#ifndef LINE_H_
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#define LINE_H_
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#include "utf8.h"
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/*
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* All text is kept in circularly linked lists of "struct line" structures. These
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* begin at the header line (which is the blank line beyond the end of the
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* buffer). This line is pointed to by the "struct buffer". Each line contains a the
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* number of bytes in the line (the "used" size), the size of the text array,
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* and the text. The end of line is not stored as a byte; it's implied. Future
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* additions will include update hints, and a list of marks into the line.
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*/
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struct line {
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struct line *l_fp; /* Link to the next line */
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struct line *l_bp; /* Link to the previous line */
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short l_size; /* Allocated size */
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short l_used; /* Used size */
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char l_text[1]; /* A bunch of characters. */
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};
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#define lforw(lp) ((lp)->l_fp)
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#define lback(lp) ((lp)->l_bp)
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#define lgetc(lp, n) ((lp)->l_text[(n)]&0xFF)
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#define lputc(lp, n, c) ((lp)->l_text[(n)]=(c))
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#define llength(lp) ((lp)->l_used)
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extern void lfree(struct line *lp);
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extern void lchange(int flag);
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extern int insspace(int f, int n);
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extern int linstr(char *instr);
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extern int linsert(int n, int c);
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extern int lowrite(int c);
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extern int lover(char *ostr);
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extern int lnewline(void);
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extern int ldelete(long n, int kflag);
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extern int ldelchar(long n, int kflag);
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extern int lgetchar(unicode_t *);
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extern char *getctext(void);
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extern int putctext(char *iline);
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extern int ldelnewline(void);
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extern void kdelete(void);
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extern int kinsert(int c);
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extern int yank(int f, int n);
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extern struct line *lalloc(int); /* Allocate a line. */
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#endif /* LINE_H_ */
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